diff --git a/guides/key-concepts/transfers.mdx b/guides/key-concepts/transfers.mdx
index 97ebeff..cb5da62 100644
--- a/guides/key-concepts/transfers.mdx
+++ b/guides/key-concepts/transfers.mdx
@@ -232,6 +232,10 @@ If Sure didn't automatically match a transfer:
 - The dates may be too far apart
 - You can manually create a transfer to link them
 
+### Concurrent syncs dropping transfer matches
+
+If two account syncs run at the same time for the same family, Sure may occasionally skip a transfer candidate due to a database uniqueness conflict. The skipped candidate is not matched, but the sync continues and matches all remaining candidates. If you notice a transfer that wasn't auto-matched after a sync, confirm it manually from the transaction detail view.
+
 ### Wrong Transfer Type
 
 If a transfer is categorized incorrectly: